Often the case (and especially) when it comes out a new version of Ubuntu, that repositories from which we tend to download software are highly saturated. If you want to download and install the software more quickly, we will have to modify the list of repositories.

There is an option to Synaptic, which allows us to select a server closest to our region. To change this to a server closest go to System> Administration> Origins of software under the tab "Software Ubuntu", choose "download".

Install the software basics of compilation
If you want to compile some of the package that only have the source code, in this case we need to install packages basic Basic compilation:

sudo aptitude install build-essential

Installing the extra restrictive.
There are certain packages that do not come by default in Ubuntu for legal issues. for example, may be the plug-in flash, or codecs to be able to play some video formats. There is a metapackage (a package that includes many more packages and installs) called ubuntu-restricted-extras that can install all the required restricted packages.

sudo apt-get install ubuntu-restricted-extras

Repository for mediubuntu Intrepid Ibe
Mediubuntu is a repository where we can find some applications and codecs that are not installed by default. We can add to the list of repositories from command terminal: